Oscillating blade edger



Jan. l, 1957 R. E. HOLMES ETAL OSCILLATING BLADE EDGER 2 Sheets-Sheet lFiled March 5, 1953 la d5 Fles ROLAND E. FATE?.

RUSSELL C. BALES avr/W l ATTRNEY FIGA.

Jan. 1, 1957 R. E. HOLMES ETAL 2,775,857

OSCILLATING BLADE EDGER Filed Maron s, 1953 2 sheets-sheet 211s/1112177015:"l 'ROLAND E. HOLMES. RUSSELL C. BALES 44m/dd. m.

ATTORNEY M Patented Jlan. i, 19,57

Figure 9 is an upward view of .the .body support for the blademechanism. Similar reference characters pertain yto `the same .partsStates latent @Hice 2775857 2 775,357 in vall .the drawings.

V [n the construction shown, a cutter 4head comprises .QSCILLATING BLADEa pair of at and straight lbut triangularly contoured knife blades 10,positioned in `openly spread V-form and in- ROlmd E' Holmes and Russ'uc'als. Balumqrg .tegrally connected 4at the junction 11. The blades areApplicntion March 3, 1953, Serial No. 339,397; 10 Asharpened .on lthesides 12 and .cooperate to effectively i u tout vegetation when `shearedover by a fast moving single lclalm' 15G-265) triangular double edgeblade `13. The junction 11 .or

` base of the dually formed blades 10 is .fastened by screws s .4D tothe `body'lal ot' the trimmer. makes .the blades 10 stationary. Theblade 13 oscillates through a pre- This invention refers to agrieulturalequipment and determined arc sutiicient to cross over both blades 10more Particularly to those pertaining tothe trimmingor and shear ottgrass engaged between them, when the j, Cutting 0f grass, small Shrubs,hedges and veaetaden device is pushed along. The blade 13 is placedabove folrlrrllld en. lawns anfdlgrass lets-- u f d th tle Ilalatlies1150 and its stroke is controlled by the side e rlmmlng o awn e ges 1susua y per orme w1 o t e S Ot t garden shears actuated l"y hand, and islaborious and The mechanism used in the operation of the blade 13, SloW-In Some instances poWer is applied and the trimconsists of a gear disc16 with its propelling peripheral mms devlee 1S made somewhat 0n the hne0f adnllleddled pin 17 in contact with the interior surface of slot 15of laWIl nloWer- Itis cumbersome eXpenSiVe, an ar 'to dual lugs 18 onthe face of the blade. The pin 17 is manipulate In this invention thedeViee is of simple rotated by a gear 37 attached to shaft 19 extendingfrom design vvihbshear bllldes tincluded il its itrllllture. It tllem'tlor 20, locltelfcl on the upperfac 1 of the Cligtdy 1s Operate y aSma m0 0r an ma e So g eonVenis is a we nown conventlona evice use ortent, and Compact that it can be manipulated by the use changing arotary to a reciprocating motion. This mech of a single hand of anOperator, and adjusted to dlVers anism moves the blade 13 back and forththrough a angles t0 suit the needs of the Work to be done- 30predetermined arc and causes it to cut any vegetation Tg1 attaln theselatues and tofmlke .the dtevlcethrcault Dewi/gen lnife edgs md those ofthedstuonl; oug y practica, e s ruCtl-lre o e 1I1Ver1 1on 1s e- Vary aes e ousing o t e motor 1s provi e wlt Signed te meet Certain Objects,One 0f which is t0 p revide a boss 22 on which a swivel coupling 23 isattached. This a new and improved garden trimmer that Wil1 aVold oneswivel coupling 23 consists of .double cylinder members or more 0f thedlsedvantases 0f the pnor art and lts 5 24 and 2s. 'Ihe member 24 isfastened stationarlly to limitations. 3 the boss 22. This member 24 hasa number of recesses Another Object 0f the invention iS t0 provide a IleW 28 preferably eight concentrically arranged around a and improvedgrass trlmmer that can be held and marllpncentral passage 26 adapted tohold a tillister head screw lated by hand, With the inclusion of meanst0 Vary the 27 used to secure the member 25 rotatably attached tocuttinfg agle. b f th d it. Tijelll'ecses 28 lold 1coil 3s11aringsh29that 1'esile5ntly ur er o ject o ls lnventlon 1s to provl e a new pressa s into e s ots in t e mem er to and improved grass 0r lawn edgetrimmer 0r cutter to hold the members frictionally tight. The member 25cut the vegetation as it rolls along the ground, and has can be revolvedby force from one set of slots to another a motor incorporated in itsstructure capable of perby moving the long handle 32. This handleenables the forming this type of work rapidly and eiectlvely, and userto roll the cutterhead along the grass to be trimmed. yet not adding t0its Weight te any Substannal extent Attached to the handle 32 adjacentto the coupling 23 and without making the device cumbersome. is anextending arm 33 of bifurcated form adapted to Other objects of theinvention Will be noted aS it iS straddle and hold a roller 34 and itsshaft 35. This more fully detailed and the principles and operation arm33 screws in and out of member 2S and regulates described. the distancebetween the ground and the cutter head In order to make the dlnventloncller, referenoe 1s mde and conrols the height s the vgetatlon belillgclfltb1 rltihe to the accompanying rawings. ese rawings W en blade 1 ispivote at on e junction o a es used in conjunction with the followingdescription em- 10 and the cutting edges of the blades are resilientlyphasize a particular form of the invention as an eX- `tensioned by aspring 41 pressing, at one end, on a shell s anrdplttlel,analdtthltllaillrlrsnedltonlel `tvhlicxpfiss ojfasttll lnventlon 55gda'gctlleedbtgdlslelnovmg blade 13 and, at the other an e p r 1c e eReferring to the drawings in which: In the operation of the device theuser holding the 'i Figure 1 is a plan view of an oscillating blade edgehandle 32, places the cutter head close to the grass to i trimmer deviceembodying this invention; be trimmed and starts the motor so that theblade 13 Figure 2 is a Side elevation of Figure 1; 60 oscillates acrossthe blades 10, and cuts vegetation be- Figure 3 is a detail of thepropelling disc mechanism tween thm- The mftof 1S fed through a cable 36Pass employed in this embodiment; lng tllt 1n a chonvtlonalt malllnnlran onrolled bjtfha Figure 4 is a view looking into the stationary capsmta e SW1 c e Cu er ea 1S ro e aong on e roller 34 and the swivel isrotatably adjusted to hold the cutter head at the desired angle. Theballs 30 retract resiliently to enable this to be done in a conventionalmanner.

member of the swivel coupling used in this embodiment;

Figure 5 is an enlarged longitudinal sectional view 65 through thecoupling;

Figure 6 is a Plan detail of the blades used in this The cutter head canbe removed from the handle and embodiment; operated as a hand machine ifpreferred. In which case Figure 7 iS a Perspective detail 0f the rollerand arm; 70 the angle of cutting the vegetation is determined by theFigure 8 is a sectional detail through the pivot and way the user holdsthe cutter in his hand.

blade tensioning device; and While but one general form of the inventionis shown in the drawings and described in the specification, it is notdesired to limit this application for patent to this particular form asit is appreciated that other forms of construction could be made thatwould use the same principles and come within the scope of the appendedclaim.

Having thus described the invention, what is claimed is:

A power operated cutter, comprising, a motor casing having a motortherein, a body portion depending from said casing, a stationaryV-shaped cutter carried by said portion, a double edged cutting bladepivoted to said cutter, connecting means between said motor and saidcutting blade for oscillating the latter, a handle for said power cutterand a quick-adjustable, flexible connection between said motor casingand said handle to vary the cutting angle, said connection consisting ofa hollow boss carried laterally by said motor casing, said handleabutting the open end of said boss, springs in said boss pressingagainst balls in said handle allowing rotation of said handle about saidboss, and retaining means in said boss to prevent disconnection betweensaid boss and said handle.

References Cited inthe tile of this patent UNITED STATES PATENTS1,860,316 Clark May 24, 1932 2,286,552 Klose June 16, 1942 2,503,348Miller Apr. 11, 1950 2,504,259 Ford Apr. 18, 1950 2,574,947 Allen Nov.13, 1951 2,629,220 Grieder Feb. 24, 1953 2,652,626 Dutcher Sept. 22,1953

